E

Function Description

The e() function is used to return the base of the natural logarithm, which is the mathematical constant e.

Syntax

e()

Return Type

The return value type is double.

Usage Example

The following is an example of using the e() function:

-- Query the value of e
SELECT e();

After executing the above query, the value of the natural constant e will be returned, which is approximately 2.7182818284590451.

Example and Explanation

1. Query the value of e alone:

   SELECT e();
   

The result is as follows:

2.7182818284590451